This set of Boba Fett Fold-Up Headphones is compatible with most MP3 players, iPods, and portable and console games, with its standard 3.5 mm audio jack. The headphones are lightweight, compactable, and fully adjustable, and they feature 40MM stereo-sound speakers. These Boba Fett Headphones are music to the ears of any Star Wars fan! 1-year limited warranty included.